JP2004184047A - Outdoor unit for air-conditioner - Google Patents

Outdoor unit for air-conditioner Download PDF

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Publication number
JP2004184047A
JP2004184047A JP2002354942A JP2002354942A JP2004184047A JP 2004184047 A JP2004184047 A JP 2004184047A JP 2002354942 A JP2002354942 A JP 2002354942A JP 2002354942 A JP2002354942 A JP 2002354942A JP 2004184047 A JP2004184047 A JP 2004184047A
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Japan
Prior art keywords
compressor
temperature
evaporator
outdoor unit
air
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Pending
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JP2002354942A
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Japanese (ja)
Inventor
Yuichiro Do
祐一郎 戸
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Fujitsu General Ltd
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Fujitsu General Ltd
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Priority to JP2002354942A priority Critical patent/JP2004184047A/en
Publication of JP2004184047A publication Critical patent/JP2004184047A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioner capable of being continuously operated by effectively cooling a compressor. <P>SOLUTION: This outdoor unit for the air-conditioner comprises a body partitioned into a heat exchange room 12 and a machine room 13 with a partition plate 11, a condenser 2 and a blower 14 for blowing outside air to the condenser, arranged in the heat exchange room, and a compressor 1 arranged in the machine room, wherein an evaporator 6 and a blower 8 for blowing cool air cooled by the evaporator to the compressor are provided in the machine room. In the compressor, a thermistor 15 is provided as a temperature detector for detecting the temperature of the compressor. When the temperature detected by the thermistor is a fixed temperature or higher, a cooling medium is distributed into the evaporator 6 and the blower 8 is operated. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、室内の空気を調和する空気調和機の室外機に係わり、とくに圧縮機の温度上昇防止に関する。
【0002】
【従来の技術】
従来の空気調和機は、図5に示すように、圧縮機1、凝縮器(室外熱交換器)2、減圧装置3、蒸発器(室内熱交換器)4とからなる冷凍サイクルを備えており、前記圧縮機1、凝縮器(室外熱交換器)2、減圧装置3を室外機10に内臓し、また前記蒸発器(室内熱交換器)4を室内機20に内臓している。
そして、前記圧縮機1で圧縮された高圧高温冷媒を前記凝縮器(室外熱交換器)2にて外気と熱交換することにより凝縮させ、前記減圧装置3にて減圧して前記蒸発器(室内熱交換器)4にて室内空気と熱交換して蒸発させることにより、室内空気を冷すようになっている。
ところで、前記圧縮機1は、図4に示すように、室外機10の本体内を仕切板11により区画された一方の機械室13に設置され、前記凝縮器(室外熱交換器)2は他方の熱交換室12に、同凝縮器(室外熱交換器)2に外気を送風する送風機14と共に設置されている。
前記圧縮機1は冷媒ガスを圧縮して循環させるとともに、圧縮することにより発熱し、圧縮機1のシェルや内臓される図示しない電動機の巻線温度を上昇させることになる。
そこで、前記機械室13には外気が導入され、前記圧縮機1を冷やすようにしているが、外気温度が高い場合は、圧縮機1のシェル温度の限界(例えば100℃)または、電動機の巻線温度の限界(例えば130℃)を超え、故障の原因となりかねない。
そこで、特許文献1に示すように、圧縮機15の表面に接する状態で、蒸発器11にて結露した水分を貯留する冷却管16を螺旋状に配設し、圧縮機15を冷却している(例えば、特許文献1参照。)。
しかし、この構成では、室内が乾燥し、蒸発器11にて結露する水分が少ない場合は冷却管16に冷水が流れないため、圧縮機15を冷却できないという問題がある。
【0003】
【特許文献1】
特開2002−195602号公報(第2−4頁、第2図)
【0004】
【発明が解決しようとする課題】
本発明は以上述べた問題点を解決し、効果的に圧縮機を冷却することにより、連続運転を可能にした空気調和機の室外機を提供することを目的としている。
【0005】
【課題を解決するための手段】
本発明は上述の課題を解決するため、本体内を仕切板により熱交換室と機械室とに区画し、前記熱交換室に凝縮器と、同凝縮器に外気を通風する送風機とを配設し、前記機械室に圧縮機を配設してなる空気調和機の室外機において、
前記機械室に蒸発器と、同蒸発器により冷却された冷気を前記圧縮機に送風する送風機とを設けてなる空気調和機の室外機としている。
【0006】
前記圧縮機に、同圧縮機の温度を検出する温度検出器を設け、同温度検出器により検出された温度が一定温度以上になったら前記蒸発器に冷媒を流通すると共に、前記送風機を運転するようにしてなる空気調和機の室外機としている。
【0007】
【発明の実施の形態】
以下、図面に基づいて本発明による空気調和機の室外機を詳細に説明する。
図1は本発明による空気調和機の室外機の一実施例を示す要部斜視図、図2は同室外機を使用した冷凍サイクルを示す冷媒回路図である。
図1に示すように、室外機本体10の内部を仕切板11により熱交換室12と機械室13とに区画し、熱交換室12に凝縮器(室外熱交換器)2と、同凝縮器(室外熱交換器)2に外気を流通する送風機14と図2には図示しない減圧装置(3)を配設し、機械室13に前記圧縮機1と、前記減圧装置(3)から分流した冷媒の流量を制限する図2には図示しない膨張弁(5)と蒸発器6を直列接続したバイパス回路(7)と、前記蒸発器6に外気を通風し、同冷却された冷気を前記圧縮機1に送風する送風機8を配設するようにしている。
前記室外機本体10の図示しない手掛には外気を導入する吸気口が設けられ、また、前記仕切板11には前記圧縮機1に送風して暖められた空気を排出する排気口11aが設けられている。
また、前記圧縮機1には同圧縮機1のシェル温度を検出する温度検出器としてのサーミスタ15を備えている。
【0008】
前記室外機10を使用した空気調和機は、図2に示すように、圧縮機1、凝縮器(室外熱交換器)2、減圧装置3、蒸発器(室内熱交換器)4とからなる冷凍サイクルを備えている。
そして、前記圧縮機1で圧縮された高圧高温冷媒を前記凝縮器(室外熱交換器)2にて外気と熱交換することにより凝縮させ、前記減圧装置3にて減圧して前記蒸発器(室内熱交換器)4にて室内空気と熱交換して蒸発させることにより、室内空気を冷すようになっている。
また、前記減圧装置3と前記蒸発器(室内熱交換器)4との間と、前記蒸発器(室内熱交換器)4と前記圧縮機1との間に、膨張弁5と蒸発器6を直列接続したバイパス回路7を設けている。
そして、図1にも示したように、前記蒸発器6と前記圧縮機1との間に送風機8を設け、同送風機8の吸い込んだ外気を前記蒸発器6で冷却して前記圧縮機1に送風することにより、圧縮機1を冷却できるようになっている。
【0009】
また、前記蒸発器(室内熱交換器)4は図2に示すように室内機20に配設されている。
【0010】
以上の構成において、つぎにその動作を説明する。
図3は本発明による空気調和機の室外機の動作を説明するためのフローチャートである。
冷房運転が開始されると、サーミスタ15の検出する温度(Ts)が一定の温度(Th=例えば限界温度100℃を超えない90℃)と比較され(ST1)、一定の温度(Th)以下の場合は、前記膨張弁5は全閉するとともに送風機8は停止し(ST2)、前記圧縮機1の回転数を調節することにより、室内温度が設定温度となるように制御される。
ST1において、前記サーミスタ15の検出する温度が一定の温度(Th)以上となると、前記膨張弁5を所定の開度まで開放するとともに、送風機8を運転し(ST3)て強制的に外気を取り込んで前記蒸発器6に通風して冷やした冷風を前記圧縮機1に送風して効果的に圧縮機1を冷却するようにしている。
これにより、圧縮機を連続運転しても、圧縮機のシェルの温度が限界温度100℃を超えない90℃以下の温度に保つことができ、圧縮機の熱による破損を防止し、信頼性の高い空気調和機の室外機を提供することができる。
【0011】
上記実施例では、サーミスタ15により圧縮機1のシェル温度を検出したが、できれば圧縮機1内の電動機巻線温度を検出して同様の制御を行うようにしてもよいことは記するまでもなく理解できよう。
【0012】
【発明の効果】
以上説明したように、本発明による空気調和機の室外機によれば、圧縮機の温度が一定温度以上となると膨張弁を所定の開度まで開放するとともに、送風機を運転して強制的に外気を取り込んで前記蒸発器に通風して冷やした冷風を通風して効果的に圧縮機を冷却することができるので、圧縮機のシェル温度または電動機巻線温度の限界温度を超えることがなく、高外気温度時であっても連続運転することができる、信頼性の高い空気調和機の室外機を提供することができる。
【図面の簡単な説明】
【図1】本発明による空気調和機の室外機の一実施例の室外機を示す要部斜視図である。
【図2】本発明による空気調和機の室外機の一実施例を示す冷媒回路図である。
【図3】本発明による空気調和機の室外機の一実施例の動作を説明するためのフローチャートである。
【図4】従来の空気調和機の室外機の室外機を示す要部斜視図である。
【図5】従来の空気調和機の室外機を示す冷媒回路図である。
【符号の説明】
1 圧縮機
2 凝縮器(室外熱交換器)
3 減圧装置
4 蒸発器(室内熱交換器)
5 膨張弁
6 蒸発器
7 バイパス回路
8 送風機
10 室外機
11 仕切板
11a 排気口
12 熱交換室
13 機械室
14 送風機
15 サーミスタ
20 室内機
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an outdoor unit of an air conditioner that reconciles indoor air, and more particularly to prevention of temperature rise of a compressor.
[0002]
[Prior art]
As shown in FIG. 5, the conventional air conditioner includes a refrigeration cycle including a compressor 1, a condenser (outdoor heat exchanger) 2, a pressure reducing device 3, and an evaporator (indoor heat exchanger) 4. The compressor 1, the condenser (outdoor heat exchanger) 2, and the pressure reducing device 3 are incorporated in the outdoor unit 10, and the evaporator (indoor heat exchanger) 4 is incorporated in the indoor unit 20.
The high-pressure high-temperature refrigerant compressed by the compressor 1 is condensed by exchanging heat with the outside air in the condenser (outdoor heat exchanger) 2, and decompressed by the decompression device 3 to reduce the pressure in the evaporator (indoor). The indoor air is cooled by exchanging heat with the indoor air in the heat exchanger 4 to evaporate.
Meanwhile, as shown in FIG. 4, the compressor 1 is installed in one machine room 13 in which a main body of an outdoor unit 10 is partitioned by a partition plate 11, and the condenser (outdoor heat exchanger) 2 is mounted on the other side. And a blower 14 for blowing outside air to the condenser (outdoor heat exchanger) 2.
The compressor 1 compresses and circulates the refrigerant gas and generates heat by the compression, thereby increasing the temperature of the shell of the compressor 1 and the winding temperature of an electric motor (not shown) incorporated therein.
Therefore, outside air is introduced into the machine room 13 to cool the compressor 1. However, when the outside air temperature is high, the shell temperature limit of the compressor 1 (for example, 100 ° C.) or the winding of the motor 1 The temperature may exceed the limit of the linear temperature (for example, 130 ° C.) and cause a failure.
Therefore, as shown in Patent Literature 1, a cooling pipe 16 that stores moisture condensed in the evaporator 11 is spirally arranged in contact with the surface of the compressor 15 to cool the compressor 15. (For example, refer to Patent Document 1).
However, this configuration has a problem that the compressor 15 cannot be cooled because the cold water does not flow through the cooling pipe 16 when the room is dried and the moisture condensed in the evaporator 11 is small.
[0003]
[Patent Document 1]
JP-A-2002-195602 (pages 2-4, FIG. 2)
[0004]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-mentioned problems and to provide an outdoor unit of an air conditioner that enables continuous operation by effectively cooling a compressor.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention divides the inside of the main body into a heat exchange chamber and a machine room by a partition plate, and arranges a condenser in the heat exchange chamber and a blower that ventilates outside air to the condenser. And in an outdoor unit of an air conditioner having a compressor disposed in the machine room,
An outdoor unit of an air conditioner, comprising an evaporator in the machine room and a blower for blowing cool air cooled by the evaporator to the compressor.
[0006]
The compressor is provided with a temperature detector for detecting the temperature of the compressor, and when the temperature detected by the temperature detector becomes equal to or higher than a predetermined temperature, the refrigerant flows through the evaporator and the blower is operated. An outdoor unit of the air conditioner thus configured.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an outdoor unit of an air conditioner according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of an essential part showing an embodiment of an outdoor unit of an air conditioner according to the present invention, and FIG. 2 is a refrigerant circuit diagram showing a refrigeration cycle using the outdoor unit.
As shown in FIG. 1, the interior of the outdoor unit main body 10 is partitioned by a partition plate 11 into a heat exchange room 12 and a machine room 13, and the condenser (outdoor heat exchanger) 2 and the condenser A blower 14 for circulating outside air and a decompression device (3) not shown in FIG. 2 are provided in the (outdoor heat exchanger) 2, and the compressor 1 and the decompression device (3) are diverted to the machine room 13. A bypass circuit (7) in which an expansion valve (5) not shown in FIG. 2 and an evaporator 6 are connected in series, which restricts the flow rate of the refrigerant, and a flow of outside air through the evaporator 6 to compress the cooled cool air A blower 8 for blowing air to the machine 1 is provided.
A suction port for introducing outside air is provided in a handle (not shown) of the outdoor unit main body 10, and an exhaust port 11 a for discharging the warmed air blown to the compressor 1 is provided in the partition plate 11. Have been.
Further, the compressor 1 is provided with a thermistor 15 as a temperature detector for detecting a shell temperature of the compressor 1.
[0008]
As shown in FIG. 2, the air conditioner using the outdoor unit 10 includes a refrigeration system including a compressor 1, a condenser (outdoor heat exchanger) 2, a pressure reducing device 3, and an evaporator (indoor heat exchanger) 4. Has a cycle.
The high-pressure high-temperature refrigerant compressed by the compressor 1 is condensed by exchanging heat with the outside air in the condenser (outdoor heat exchanger) 2, and decompressed by the decompression device 3 to reduce the pressure in the evaporator (indoor). The indoor air is cooled by exchanging heat with the indoor air in the heat exchanger 4 to evaporate.
An expansion valve 5 and an evaporator 6 are provided between the decompression device 3 and the evaporator (indoor heat exchanger) 4 and between the evaporator (indoor heat exchanger) 4 and the compressor 1. A bypass circuit 7 connected in series is provided.
As shown in FIG. 1, a blower 8 is provided between the evaporator 6 and the compressor 1, and the outside air sucked by the blower 8 is cooled by the evaporator 6 and supplied to the compressor 1. By blowing air, the compressor 1 can be cooled.
[0009]
The evaporator (indoor heat exchanger) 4 is provided in the indoor unit 20 as shown in FIG.
[0010]
Next, the operation of the above configuration will be described.
FIG. 3 is a flowchart for explaining the operation of the outdoor unit of the air conditioner according to the present invention.
When the cooling operation is started, the temperature (Ts) detected by the thermistor 15 is compared with a certain temperature (Th = for example, 90 ° C. that does not exceed the limit temperature of 100 ° C.) (ST1), and is equal to or lower than the certain temperature (Th). In this case, the expansion valve 5 is fully closed and the blower 8 is stopped (ST2), and the rotation speed of the compressor 1 is adjusted so that the room temperature is controlled to the set temperature.
In ST1, when the temperature detected by the thermistor 15 becomes equal to or higher than a certain temperature (Th), the expansion valve 5 is opened to a predetermined opening and the blower 8 is operated (ST3) to forcibly take in outside air. Thus, the cool air that has been cooled by passing through the evaporator 6 is sent to the compressor 1 to effectively cool the compressor 1.
As a result, even when the compressor is continuously operated, the temperature of the shell of the compressor can be maintained at a temperature of 90 ° C. or less which does not exceed the limit temperature of 100 ° C. An outdoor unit of a high air conditioner can be provided.
[0011]
In the above embodiment, the shell temperature of the compressor 1 is detected by the thermistor 15. However, it is needless to say that the same control may be performed by detecting the motor winding temperature in the compressor 1 if possible. I can understand.
[0012]
【The invention's effect】
As described above, according to the outdoor unit of the air conditioner of the present invention, when the temperature of the compressor becomes equal to or higher than the predetermined temperature, the expansion valve is opened to a predetermined opening degree, and the blower is operated to forcibly open the outside air. To cool the compressor effectively by passing the cooled cold air through the evaporator, so that the temperature does not exceed the limit temperature of the shell temperature of the compressor or the motor winding temperature. It is possible to provide a highly reliable outdoor unit of an air conditioner that can be operated continuously even at the time of outside air temperature.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part showing an outdoor unit of an embodiment of an outdoor unit of an air conditioner according to the present invention.
FIG. 2 is a refrigerant circuit diagram showing an embodiment of the outdoor unit of the air conditioner according to the present invention.
FIG. 3 is a flowchart illustrating the operation of an embodiment of the outdoor unit of the air conditioner according to the present invention.
FIG. 4 is a perspective view showing a main part of an outdoor unit of a conventional air conditioner.
FIG. 5 is a refrigerant circuit diagram showing an outdoor unit of a conventional air conditioner.
[Explanation of symbols]
1 compressor 2 condenser (outdoor heat exchanger)
3 decompression device 4 evaporator (indoor heat exchanger)
Reference Signs List 5 Expansion valve 6 Evaporator 7 Bypass circuit 8 Blower 10 Outdoor unit 11 Partition plate 11a Exhaust port 12 Heat exchange room 13 Machine room 14 Blower 15 Thermistor 20 Indoor unit

Claims (2)

本体内を仕切板により熱交換室と機械室とに区画し、前記熱交換室に凝縮器と、同凝縮器に外気を通風する送風機とを配設し、前記機械室に圧縮機を配設してなる空気調和機の室外機において、
前記機械室に蒸発器と、同蒸発器により冷却された冷気を前記圧縮機に送風する送風機とを設けてなることを特徴とする空気調和機の室外機。
The main body is divided into a heat exchange room and a machine room by a partition plate, a condenser is provided in the heat exchange room, and a blower for ventilating outside air to the condenser, and a compressor is provided in the machine room. In the outdoor unit of the air conditioner
An outdoor unit for an air conditioner, comprising: an evaporator; and a blower for blowing cool air cooled by the evaporator to the compressor in the machine room.
前記圧縮機に、同圧縮機の温度を検出する温度検出器を設け、同温度検出器により検出された温度が一定温度以上になったら前記蒸発器に冷媒を流通すると共に、前記送風機を運転するようにしてなることを特徴とする請求項1記載の空気調和機の室外機。The compressor is provided with a temperature detector for detecting the temperature of the compressor, and when the temperature detected by the temperature detector becomes equal to or higher than a certain temperature, the refrigerant flows through the evaporator and the blower is operated. The outdoor unit of an air conditioner according to claim 1, wherein:
JP2002354942A 2002-12-06 2002-12-06 Outdoor unit for air-conditioner Pending JP2004184047A (en)

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JP2007225162A (en) * 2006-02-22 2007-09-06 Mitsubishi Electric Corp Refrigerating device
JP2008530486A (en) * 2005-02-07 2008-08-07 カステリャナ デ スミニストロス フリゴリフィコス,エセ.ア. Apparatus and method for recovery of lubricants and / or refrigerants in equipment with a cooling cycle
WO2014041920A1 (en) * 2012-09-12 2014-03-20 三菱電機株式会社 Refrigeration cycle device
JP2015215162A (en) * 2015-09-02 2015-12-03 三菱電機株式会社 Refrigeration cycle device
WO2017022023A1 (en) * 2015-07-31 2017-02-09 三菱電機株式会社 Outdoor unit for air conditioner
CN107062478A (en) * 2017-04-13 2017-08-18 广东海悟科技有限公司 A kind of air-conditioning for outdoor cabinet
WO2017140210A1 (en) * 2016-02-16 2017-08-24 珠海格力电器股份有限公司 Outdoor unit of air conditioner, and outdoor unit separator thereof
WO2017145713A1 (en) * 2016-02-22 2017-08-31 旭硝子株式会社 Heat exchange unit

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008530486A (en) * 2005-02-07 2008-08-07 カステリャナ デ スミニストロス フリゴリフィコス,エセ.ア. Apparatus and method for recovery of lubricants and / or refrigerants in equipment with a cooling cycle
JP2007225162A (en) * 2006-02-22 2007-09-06 Mitsubishi Electric Corp Refrigerating device
CN105674430A (en) * 2012-09-12 2016-06-15 三菱电机株式会社 Refrigeration cycle device
CN103673095A (en) * 2012-09-12 2014-03-26 三菱电机株式会社 Refrigeration cycle device
JP2014055705A (en) * 2012-09-12 2014-03-27 Mitsubishi Electric Corp Refrigeration cycle device
US20150204599A1 (en) * 2012-09-12 2015-07-23 Mitsubishi Electric Corporation Refrigeration cycle device
CN105674430B (en) * 2012-09-12 2019-05-03 三菱电机株式会社 Freezing cycle device
AU2013317055B2 (en) * 2012-09-12 2016-03-03 Mitsubishi Electric Corporation Refrigeration cycle device
WO2014041920A1 (en) * 2012-09-12 2014-03-20 三菱電機株式会社 Refrigeration cycle device
EP2896897A4 (en) * 2012-09-12 2016-08-03 Mitsubishi Electric Corp Refrigeration cycle device
CN103673095B (en) * 2012-09-12 2017-01-11 三菱电机株式会社 Refrigeration cycle device
WO2017022023A1 (en) * 2015-07-31 2017-02-09 三菱電機株式会社 Outdoor unit for air conditioner
JPWO2017022023A1 (en) * 2015-07-31 2018-03-01 三菱電機株式会社 Air conditioner outdoor unit
JP2015215162A (en) * 2015-09-02 2015-12-03 三菱電機株式会社 Refrigeration cycle device
WO2017140210A1 (en) * 2016-02-16 2017-08-24 珠海格力电器股份有限公司 Outdoor unit of air conditioner, and outdoor unit separator thereof
WO2017145713A1 (en) * 2016-02-22 2017-08-31 旭硝子株式会社 Heat exchange unit
CN108700344A (en) * 2016-02-22 2018-10-23 Agc株式会社 Heat exchange unit
EP3421903A4 (en) * 2016-02-22 2019-08-28 Agc Inc. Heat exchange unit
CN107062478A (en) * 2017-04-13 2017-08-18 广东海悟科技有限公司 A kind of air-conditioning for outdoor cabinet

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